<template>
    <div>
      <nav-bar>

        <template #left>
          <div class="back" @click="backClick">
            <img src="~assets/img/common/back.svg">
          </div>
        </template>

        <template #center >
          <div class="title">
            <div v-for="(item,index) in titles"
                 class="title-item"
                 :class="{active:index===currentIndex}"
                 @click="titleClick(index)">{{item}}</div>
          </div>

        </template>
      </nav-bar>
    </div>
</template>

<script>
  import NavBar from "components/common/navbar/NavBar";
    export default {
        name: "DetailNavBar",
      components:{
          NavBar
      },
      data(){
          return{
            titles: ['商品','参数','评论','推荐'],
            currentIndex:0
          }
      },
      methods:{
        titleClick(index){
          this.currentIndex=index;
          this.$emit('titleClick',index)
        },
        backClick(){
          this.$router.back()
        }
      }
    }
</script>

<style >
  .title{display: flex;font-size: 13px}
  .title-item{flex: 1;}
  .active{
    color: red;
  }
  .back img{
    margin-top: 12px;
  }
</style>
